Welding and Microstructure

Table of Contents

Welding and Microstructure

Welding and Microstructure

Thermal Cycle

Thermal Cycle (cont.)

Heat Affected Zone

Carbon-Manganese Steels

Weld Metal Microstructure

Acicular Ferrite and Grain Boundary Ferrite

Ferrite with aligned M-A-C

Weld Metal Microstructure (cont)

High Heat Input Weld (Electroslag)

Heat Affected Zone

Heat Affected Zone

Subcritical Region

Intercritical Region

Supercritical Region

Supercritical Region

Rapid Cooling - Martensite

Slower cooling: Martensite and M-A-C

Slower cooling: Ferrite with M-A-C

Slowest cooling: Ferrite and Pearlite

Phases in Heat Affected Zone

Email: s.j.bull@ncl.ac.uk

Home Page: http://www.staff.ncl.ac.uk/s.j.bull